scholarly journals The variation of pelvis in unilateral Crowe type IV developmental dysplasia of the hip

2020 ◽  
Author(s):  
Yinqiao Du ◽  
Jingyang Sun ◽  
Haiyang Ma ◽  
Junmin Shen ◽  
Ming Ni ◽  
...  
Keyword(s):  
Iliac Crest ◽  
Ischial Tuberosity ◽  
Developmental Dysplasia ◽  
Leg Length ◽  
Unaffected Side ◽  
Pelvic Morphology ◽  
Type Iv ◽  
The Mean ◽  
Preoperative Plan ◽  
Dysplasia Of The Hip

Abstract BackgroundThe whole pelvic morphology is very common in developmental dysplasia of the hip (DDH). The abnormalities may influence the pelvic landmarks, and then misguide the surgeon’s preoperative plan. The purpose of this study was to investigate the variation of pelvis in unilateral Crowe type IV DDH and analyze the reliability of pelvic landmarks.MethodsWe received preoperative anteroposterior pelvic radiographs examined for 89 adult patients with unilateral Crowe type IV DDH at our institution between September 2008 and May 2019. 48 patients without a false acetabulum was type IVA and 41 with a false acetabulum was type IVB. The heights of the ilium, acetabulum and ischium areas in affected and unaffected sides were measured, the discrepancies of bilateral iliac crest, inferior sacroiliac articulation, teardrop and ischial tuberosity on the bisector of the pelvis were also measured.ResultsThe mean heights of the ilium, acetabulum, ischium areas in the affected side were 74.4 mm, 88.6 mm and 37.0 mm, respectively, in type IVA group and 77.7 mm, 83.5 mm and 37.8 mm, respectively, in type IVB group. The heights in the unaffected side were 82.1 mm, 84.6 mm and 43.8 mm, respectively, in type IVA group and 84.6 mm, 82.0 mm and 44.0 mm, respectively, in type IVB group. The discrepancies of bilateral iliac crest, inferior sacroiliac articulation, teardrop and ischial tuberosity on the line of the bisector of the pelvis were 6.7 mm, 4.4 mm, 2.7 mm and 6.1 mm, respectively.ConclusionsThe pelvic asymmetry was a common occurrence in adults unilateral Crowe type IV DDH. Furthermore, it should be reliable to use teardrop as pelvic landmark to balance leg length discrepancy in preoperative planning.

How to equalize the leg length in total hip arthroplasty for patients with unilateral Crowe type IV developmental dysplasia of the hip

2020 ◽  
Author(s):  
Yinqiao Du ◽  
Jingyang Sun ◽  
Haiyang Ma ◽  
Sen Wang ◽  
Ming Ni ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Developmental Dysplasia ◽  
Leg Length ◽  
Greater Trochanter ◽  
Femoral Length ◽  
Total Hip ◽  
Type Iv ◽  
The Mean ◽  
Dysplasia Of The Hip

Abstract Background: The purpose of this study was to explore that how to equalize the leg length in total hip arthroplasty (THA) with shortening subtrochanteric osteotomy (SSTO) or not for unilateral Crowe type IV developmental dysplasia of the hip (DDH) through the evaluation of the postoperative full-length anteroposterior radiographs. Methods: The postoperative radiographs of 60 patients with unilateral Crowe type IV DDH from July 2012 to May 2019 were retrospectively reviewed. These data included leg length, femoral length, height of center of rotation (COR) of hip, height of greater trochanter, and depth of the sleeve or cone. Patients with leg length discrepancy (LLD) < 10 mm were defined as the non-LLD group. Results: In the non LLD group (26 patients of SSTO and 22 of non-SSTO), the femoral length both SSTO and non-SSTO groups were significantly shorter on operated side, compared with the contralateral side, and the mean discrepancy in SSTO group was approximately equal to the mean length of SSTO. The mean height of COR of hip on operated sides both SSTO and non-SSTO groups were 13.2 mm, and the contralateral sides were 15.2 mm and 15.5 mm, respectively. The depth of the sleeve or cone between SSTO and non-SSTO groups were 21.7 mm and 30.6 mm, respectively. The depth of the sleeve or cone in SSTO group was negatively correlated with the length of SSTO. The height of the greater trochanter of the operated and contralateral sides were 5.3 mm and 16.6 mm in SSTO group, and those in the non-SSTO group were 13.2 mm and 17.2 mm. Conclusions: SSTO leaded to femoral shortening on the operated side for patients with unilateral Crowe type IV DDH. The position of sleeve or cone should be close to the apex of greater trochanter to compensate the lengh of SSTO.

scholarly journals Mid-term results of total hip arthroplasty with modified trochanteric osteotomy in Crowe type IV developmental dysplasia of the hip

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jing-Yao Jin ◽  
Taek-Rim Yoon ◽  
Kyung-Soon Park ◽  
Sheng-Yu Jin ◽  
Dong-Min Jung ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Developmental Dysplasia ◽  
Harris Hip Score ◽  
Trochanteric Osteotomy ◽  
Leg Length ◽  
Total Hip ◽  
Type Iv ◽  
The Mean ◽  
Dysplasia Of The Hip

Abstract Background This study aimed to explore mid-term clinical results of cementless total hip arthroplasty (THA) with modified trochanteric osteotomy in Crowe type IV developmental dysplasia of the hip (DDH). Methods Thirteen patients (13 hips) with Crowe type IV DDH who underwent THA with modified trochanteric osteotomy between May 2013 and October 2015 were retrospectively analyzed. The mean follow-up duration was 5.2 years (range, 4.9–6.1 years). Results The mean Harris Hip Score (HHS) significantly (p < 0.05) improved from 30.7 (range, 22–38) to 87.5 (range, 83–93). The mean leg length discrepancy (LLD) was 53.4 mm (range, 42.1–68.5 mm) preoperatively. The final LLD was 5.6 mm (range, 2.4–9.1 mm; p < 0.05). The mean leg length after surgery was 47.4 mm (range, 33.6–67.2 mm) and the femur shortening distance was 43.8 mm (range, 31.2–53.4 mm). The average duration of bone union for the greater trochanter (GT) was 2.5 months (range, 1.5–3.6 months). There was no infection, GT non-union, or loosening (septic or aseptic) of the stem or cup in any case. Conclusions THA with modified trochanteric osteotomy with a cementless cup is an effective treatment for Crowe type IV DDH. It can rebuild complex biomechanics and biology of hip dysplasia without increasing complications.

scholarly journals Mid-term results of total hip arthroplasty with modified trochanteric osteotomy in Crowe type IV developmental dysplasia of the hip

2020 ◽  
Author(s):  
Jing Yao Jin ◽  
Taek Rim Yoon ◽  
Kyung Soon Park ◽  
Sheng Yu Jin ◽  
Yue Ju Liu ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Developmental Dysplasia ◽  
Harris Hip Score ◽  
Trochanteric Osteotomy ◽  
Leg Length ◽  
Total Hip ◽  
Type Iv ◽  
The Mean ◽  
Dysplasia Of The Hip

Abstract Introduction: The objective of this study was to explore mid-term clinical results of cementless total hip arthroplasty (THA) with modified trochanteric osteotomy in Crowe type IV developmental dysplasia of the hip (DDH).Patients and method: Thirteen patients (13 hips) with Crowe type IV DDH who underwent THA used modified trochanteric osteotomy between May 2013 and October 2019 were retrospectively analyzed. Mean follow-up was 5.2 ± 0.8 years (range, 4.9-6.1 years).Results: Mean Harris Hip Score (HHS) significantly (p < 0.05) improved from 30.7 ± 5.8 (range, 22-38) to 87.5 ± 3.6 (range, 83-93). The mean leg length discrepancy (LLD) was 53.4 ± 9.1 mm (range, 42.1-68.5 mm) preoperatively. The final LLD was 5.6 ± 2.4 mm (range, 2.4-9.1 mm). The mean leg length after surgery was 47.4 ± 10 mm (range, 33.6-67.2 mm). The average duration of bone union for greater trochanter (GT) was 2.5 ± 0.6 months (range, 1.5-3.6 months). There was no infection, GT non-union, or loosening (septic or aseptic) of the stem or cup in any case.Conclusions: THA with modified trochanteric osteotomy with cementless cup is an effective treatment for Crowe type IV developmental dysplasia of the hip. It can rebuild complex biomechanics and biology of hip dysplasia without increasing complications.

The ‘clicky hip’

2018 ◽  
Vol 100-B (9) ◽  
pp. 1249-1252 ◽  
Author(s):  
S. Humphry ◽  
D. Thompson ◽  
N. Price ◽  
P. R. Williams
Keyword(s):  
Service Provision ◽  
Closed Reduction ◽  
Developmental Dysplasia ◽  
Ultrasound Screening ◽  
Ultrasound Scan ◽  
Type Iv ◽  
Referral Practices ◽  
Adductor Tenotomy ◽  
The Mean ◽  
Dysplasia Of The Hip

Aims The significance of the ‘clicky hip’ in neonatal and infant examination remains controversial with recent conflicting papers reigniting the debate. We aimed to quantify rates of developmental dysplasia of the hip (DDH) in babies referred with ‘clicky hips’ to our dedicated DDH clinic. Patients and Methods A three-year prospective cohort study was undertaken between 2014 and 2016 assessing the diagnosis and treatment outcomes of all children referred specifically with ‘clicky hips’ as the primary reason for referral to our dedicated DDH clinic. Depending on their age, they were all imaged with either ultrasound scan or radiographs. Results There were 69 ‘clicky hip’ referrals over the three-year period. This represented 26.9% of the total 257 referrals received in that time. The mean age at presentation was 13.6 weeks (1 to 84). A total of 19 children (28%) referred as ‘clicky hips’ were noted to have hip abnormalities on ultrasound scan, including 15 with Graf Type II hips (7 bilateral), one Graf Type III hip, and three Graf Type IV hips. Of these, ten children were treated with a Pavlik harness, with two requiring subsequent closed reduction in theatre; one child was treated primarily with a closed reduction and adductor tenotomy. In total, 11 (15.9%) of the 69 ‘clicky hip’ referrals required intervention with either harness or surgery. Conclusion Our study provides further evidence that the ‘clicky hip’ referral can represent an underlying diagnosis of DDH and should, in our opinion, always lead to further clinical and radiological assessment. In the absence of universal ultrasound screening, we would encourage individual units to carefully assess their own outcomes and protocols for ‘clicky hip’ referrals and tailor ongoing service provision to local populations and local referral practices. Cite this article: Bone Joint J 2018;100-B:1249–52.

scholarly journals Robotic-arm assisted THA can achieve precise cup positioning in developmental dysplasia of the hip

2021 ◽  
Vol 10 (10) ◽  
pp. 629-638
Author(s):  
Shinya Hayashi ◽  
Shingo Hashimoto ◽  
Yuichi Kuroda ◽  
Naoki Nakano ◽  
Tomoyuki Matsumoto ◽  
...  
Keyword(s):  
Developmental Dysplasia ◽  
Robotic Arm ◽  
Consecutive Series ◽  
Leg Length ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean ◽  
Ct Data ◽  
Dysplasia Of The Hip ◽  
Cup Positioning

Aims This study aimed to evaluate the accuracy of implant placement with robotic-arm assisted total hip arthroplasty (THA) in patients with developmental dysplasia of the hip (DDH). Methods The study analyzed a consecutive series of 69 patients who underwent robotic-arm assisted THA between September 2018 and December 2019. Of these, 30 patients had DDH and were classified according to the Crowe type. Acetabular component alignment and 3D positions were measured using pre- and postoperative CT data. The absolute differences of cup alignment and 3D position were compared between DDH and non-DDH patients. Moreover, these differences were analyzed in relation to the severity of DDH. The discrepancy of leg length and combined offset compared with contralateral hip were measured. Results The mean values of absolute differences (postoperative CT-preoperative plan) were 1.7° (standard deviation (SD) 2.0) (inclination) and 2.5° (SD 2.1°) (anteversion) in DDH patients, and no significant differences were found between non-DDH and DDH patients. The mean absolute differences for 3D cup position were 1.1 mm (SD 1.0) (coronal plane) and 1.2 mm (SD 2.1) (axial plane) in DDH patients, and no significant differences were found between two groups. No significant difference was found either in cup alignment between postoperative CT and navigation record after cup screws or in the severity of DDH. Excellent restoration of leg length and combined offset were achieved in both groups. Conclusion We demonstrated that robotic-assisted THA may achieve precise cup positioning in DDH patients, and may be useful in those with severe DDH. Cite this article: Bone Joint Res 2021;10(10):629–638.

scholarly journals Leg Length Balance in Total Hip Arthroplasty for Patients with Unilateral Crowe Type IV Developmental Dysplasia of the Hip

2020 ◽  
Vol 12 (3) ◽  
pp. 749-755 ◽  
Author(s):  
Yin‐qiao Du ◽  
Jing‐yang Sun ◽  
Hai‐yang Ma ◽  
Sen Wang ◽  
Ming Ni ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Developmental Dysplasia ◽  
Leg Length ◽  
Total Hip ◽  
Type Iv ◽  
Dysplasia Of The Hip

scholarly journals The Course and Anatomical Characteristics of Sciatic and Femoral Nerves in Unilateral Crowe Type IV Hip Dysplasia

2021 ◽  
Author(s):  
Ping Song ◽  
Xiangpeng Kong ◽  
Minzhi Yang ◽  
Wei Chai
Keyword(s):  
Femoral Nerve ◽  
Anterior Wall ◽  
Ischial Tuberosity ◽  
Developmental Dysplasia ◽  
Anatomical Characteristics ◽  
Female Patients ◽  
Type Iv ◽  
Bony Landmarks ◽  
Dysplasia Of The Hip ◽  
Control Study

Abstract Background This study aims to investigate the course and anatomical characteristics of sciatic and femoral nerves in unilateral Crowe type IV developmental dysplasia of the hip (DDH) patients. Methods We conducted a retrospective own-control study of patients with unilateral Crowe type IV DDH. Bilateral hips’ CTs of 21 female patients were reviewed in our institute from February 2018 to February 2020. The distances between nerves and bony landmarks were measured in different CT sections (anterior superior iliac spine, acetabular inner wall, teardrop, and ischial tuberosity) to analyze the anatomical position and course of sciatic and femoral nerves between bilateral hips. Results In the section of acetabular inner wall, the distance between femoral nerve and acetabular anterior wall in affected hip (13.20±3.59 mm) was significantly smaller than that in healthy hip (16.58±5.12mm) (p=0.000). In other sections, the distances between nerves and bony landmarks in affected hips were significantly larger than or equal to those in healthy hips. Conclusion In female patients with unilateral Crowe type IV DDH, the femoral nerve in affected hip runs closer to anterior acetabular wall than that in healthy hip.

scholarly journals Patient’s perception on leg length discrepancy after total hip arthroplasty in patients with unilateral Crowe type IV developmental dysplasia of the hip

2020 ◽  
Author(s):  
Yinqiao Du ◽  
Junmin Shen ◽  
Jingyang Sun ◽  
Chi Xu ◽  
Ming Ni ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Developmental Dysplasia ◽  
Leg Length Discrepancy ◽  
Leg Length ◽  
Total Hip ◽  
Length Discrepancy ◽  
Type Iv ◽  
The Difference ◽  
Dysplasia Of The Hip

Abstract Background: The study assessed the correlation among the patients’ perception on leg length discrepancy (LLD) after total hip arthroplasty (THA) in patients with unilateral Crowe type IV developmental dysplasia of the hip (DDH) and the four methods of measuring the leg length in the full-length standing anteroposterior radiographs. Methods: 60 patients with unilateral Crowe type IV DDH were recruited in this retrospective study between January 2012 and January 2019. Four methods of measurement were used: (1) TD-TP: distance between the inferior aspect of teardrop and the midpoint of tibial plafond (TP). (2) CH-TP: distance between the center of femoral head or acetabular cup and the TP. (3) GT-TP: distance between the apex of greater trochanter and the TP. (4) FL + TL: the sum of femoral length and tibial length. Results: Association was found among the patients’ perception on LLD with difference in TD-TP (OR, 1.157), and the difference in FL + TL (OR, 1.166). The area under the curve of the difference in FL + TL and the difference TD-TP (0.704 and 0.679) was significantly higher than those of the difference in CH-TP and the difference in GT-TP (0.564 and 0.483). With the calculated threshold of LLD set at 9.0 mm, the sensitivity and specificity of the difference in TD-TP and the difference in FL + TL were 57.7%, 79.4% and 61.5%, 79.4%, respectively.Conclusion: Patients’ perception on LLD had good correlation and reliability on the difference of FL + TL and the difference of TD-TP.

scholarly journals The Variation of the Pelvis in Unilateral Crowe Type IV Developmental Dysplasia of the Hip

2021 ◽  
Author(s):  
Yin‐qiao Du ◽  
Bohan Zhang ◽  
Jing‐yang Sun ◽  
Hai‐yang Ma ◽  
Jun‐min Shen ◽  
...  
Keyword(s):  
Developmental Dysplasia ◽  
Type Iv ◽  
Dysplasia Of The Hip
Sign in / Sign up

Export Citation Format

Share Document